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J. C. OWENS TOILET TANK Filed Sept. 16, 1924 INVENTOR. Jesse C. One/2s 3 77 6:

I Arron/ms. 6

UNITED STATES PATENT JESSEC. OWENS, 013 LOS ANGELES, CALIFORNIA.

TOILET TANK.

Application filed September 16, 1924. Serial No. 737,994. I

To all whom it may concern:

it known that I, Jnssn' (3.. OwENs, a

citizen of the United States, residing at Los Angeles, in the county of Los Angeles 5 and State of California, have invented new and useful Improvements in Toilet Tanks, of which the following is a specification.

This invention relates to a flush tank for use with closets and the like, wherein a large volume of water is accumulated in a closed taele preparatory to discharge, the of accumulation being less than that of discharge, and the receptacle acting as 'a pneumatic tank. The primary object of this invention is to provide a closed tank wherein the water is initially forced out of the tank by the pneumatic pressure of entra pped air. Another object of this 'invention is to provide a tank so arranged that the delivery of water thereto in charging it is noiseless. A further object of this invention is to provide a tank wherein the valves and movable parts are 'built into a unit easily installed in'the receptacleand easily removed therefrom.

These objects together with other objects and corresponding accomplishments are obtained by means of the embodiment of my invention illustrated in the accompanying draw ings, in which Fig. 1 is a side elevation of a tank mounted upon a wall and connected to -a closet, a fragment of the latter being shown; Fig.

2 is Fig.

discharge mechanism; an

a section as seen on the line 2 2 of 1: Fig. 3 is an enlar ed section' of the Fig. 4: is a section. as seen on the line 4.4 of Fig. 2 on an enlar ged scale.

Referring more particularly to the drawing, 5 indicates a flat wall tank comprising a closed receptacle having a hole at the top for the insertion of the tank mechanism. Disposed within the tank are ribs 6 extending across the -tank,'secured' to the walls thereof and serving the purpose of strength ening members to aid the tank walls in withstandingpressure, -The ribs 6 are perforated to permit water to freely circulate.

A cap 7 is arranged :to'rest upon the upper portion of the tank and cover parts project- -ing a hove the t p of the tank pr p r;

head 32 for engagementby a cam. A com- A cover 8 is provided for closing the opening in the top of the tank, :and mountedtherein is a tubular casing 9 which extends above the cover S'and'is arranged to be connected by a suitable fitting 10 with-a dry air pipe 11. The casing 9'has a valve port on its lowerside adapted tov be closedby an air valve 12. Extending from the casing above the valve 12 is a branch 13 adapted to have a bypass tube 14 connected therewith. Valve 12 has a stem 15 mounted in a guide within the casing 9 and projecting below the valve. Mounted upon the stem 15 is a float ball 16. The'parts are so arranged that as a charge of water fills the receptacle, the level of the water rising, float 16 will be raised finally closing valve 12 and thereby shutting ofi communication between the air inlet pipe 11 and thetank.

Mounted in an open ng in the tank at the bottom is a valve casing 17 having a branch with is a, valve disc 20.. At the center of the valve disc is a tube 21 forming a relief port. The upper end thereof serves as a seat for the-relief valve 22. Relief valve 22 is mountedupon a stem 23 having abutment nuts 24 threaded thereon and arranged to abut the tube in valve disc 20 after relief valve 22 has been raised from its seat. Bridges 25 and 26 having openings'through which stem 23 slidably extends serve as guides for the 'valve stem. The stem is provided with an annular recess 27 ar ranged to be engaged by a lock member. later described. The casing 17 is connected by a flush pipe 28 to the bowl. Pivotally mounted in a casing 17' is alever'29 having a forked end arranged to embrace thevalvo stem 23 below the abutment. nuts. Branch 13 of air valve casing 9'is tubular and open, at the top. It is providedifwith a-brajcket 30 in which is guided a push rod. 31 resting in a socket in theend'of lever 29'; The top of the push rod is provided with-a follower pression spring 33is disposedabout. thepush rod and. is interposed between. the .br:acket 30 and the follower. The cap 7 is provided with a bearing 34- supporting a shaft 35 having at one end thereof a cam 36 and at the other end outside of the cap a handle 37. Spring 33 tends to hold the push rod in its upper positionso-that lever 29 exerts no upward pressure upon the valve stem 23 and valve disc 20 is seated. This condition prevails when the cam 36 is in the position shown in Figs. 2 and 4 There are two high spots on the cam so that when the shaft 35 is turned through 90 from the position shown in Fig. 2 the push rod will be moved downward causing the lever '29 to be turned, thereby raising stem 23. The initial movement of stem 23 lifts the relief valve 22 soft'lrat water may enter throughthe valve disc andequalize the pressure on both sides of valvedi'sc 20. Further movement of the push rod causes the stem to bestill furtherrais'ed, nut 24 cmgagingthe tube 21 andrai-sing clisc'QO fromits seat. p

In order to holdthe discharge valve 20 in open position during the -tliscli-arge of "the contents of the tank, a lock cu-p 38jis provided. This cup is loosely mounted upon the valve stem "23' so that it niay tilt and is provided with an' -internal lip "39 Upon the water rushing through *the d1seharge casing 17, it will engage the cup '38. The side ofthecup opposite tolip 39 is disposed at a: greater angle thanthe opposite sideso thatthecup will be'til ted by the impact of a the stream of Water and lip 39 wil lenter recess 2 on the stem, locking the stem. The 'cup will-be maintained inthis position during the discharge cit the water thereby holding the stem and the valve disc 1n 1ts open position upon theilow *of water stopping, the impact ont'he cup ceases and the latter "rights its'eldt'.

At one side of the tank and in the bottom thereof isa waiter inlet nipple- 40. This nipple is arranged to be connected to a source of water supply such as ithe house service pipes. Mounted upon the n pple within the tank is aihood=41 often-ma l iform serving as -'a nozzle having secured to the apex thereof arefill tube 42. the sides of the 'hoddtt're ports connectmg directly with the lower portion "at 'thewank.

and ends in a nozzle which wil-lxdireet a stream of watertoward the air valve and into the air port when ithelatter "is :open. If the tank is ei'npty g 'and val ve 5201sise'a'ted the water will enter the through 2' the water inlet p assingiout through .tlreiports 143 :in the "hold and 's'emexanovn g upwardly through the grefiill tube and ibeing em aau a the positions shown.

Assume that the tank is full of water as shown in Fig. 2 and that the members are in, The tank is closed so that air is entrapped at the top and the pneumatic pressure is equal to the pressure in the house service system. No water will enter the flush tank from "the house service system due to the equalization of pressure. To flush the tank, handle 37 is turned, thereby moving push rod 31 downward, swinging lever :29 and lifting valve stem 23 so as to raise valve disc 20. The out-rushing water engages the lock cup tilting the latter to locking position and maintaining the discharge valve in open position until all the water has been discharged. Assoon asthe water in the tank is lowered sufficiently float 16 moves downwardly opening air valve 12.

This permits airto enterthe top of the tank and thereafter the discharges -b y grav ity. lZVhe'n "all of the water has been discharged from the tank and when vailve 20 closes, water begins to accumulate in the tank entering from water i1rlet'4s0, air passingout through the air port '9. *Some of the water is "projected through the refill tube 42, through the air port and by way of the bypass tube 14 and branch '18 into the discharge As the water rises in the tank it lifts the'fioat 16yamdraisesthe latter soas to close "the air valve 12. llihereaiter the filling'of the tank is performed against the pneumatic pressure of the entrapped" air. water ceases to enter when the pressure within the tank is equal to the pressure in the house service system.

What I claim is:

Cal.

1. A flush tank "comprisingi'thezcombination of a closed receptacle rlraviing "a discharge port atthe bottom, 'aalizft'valve there- .per level, bypass connecting said airport beyond said air valve :and said discharge port beyond said lift valve, a :Water inlet at the bottom of saidireceptacleireely'connect- :ed to a source of water supply amder pressure, and a refill tube extending from said inlet for directing water into said airport and thereby through said bypass :and into Bald "discharge port.

2. flush tank comprising "the combination of a closed -1:ecepta.cle .diaving :disrJharge portiatathe 'hottom, :a lift valve .zilhi afor, ..:mea11s:fer opening saidwalve,zmeanszfm' holding aid valve :oipensdurii lg ithe a-QutfiQ efithe water contained in said-flteeeptacle an .ail' P'UlftatitllditQP of'ssaid receptacle, an air valve therefor. float means :eonnected toss iid air ivalve. :ior .closinggatheillatter rat. a [predesaid air port beyond said air valve and said discharge port beyond said lift valve, a Water inlet at the bottom of said receptacle for delivering Water thereto freely connected to a source of water supply under pres sure, a hood over said inlet having lateral ports and a nozzle, a refill tube extending from said nozzle for directing Water into said air port and thereby through said bypass into said discharge port.

In witness that I claim the foregoing I have hereunto subscribed my name this 4th day of September, 1924.

JESSE C. OWENS. 

